Help: displaying many text lines with graphics fast in applet

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John Bokma - 28 Aug 2004 21:08 GMT

Hi,

I am looking for a way to display a lot (500 - 2000) lines of text
mixed with graphics fast in an applet.

Not all lines will be visible, so I want a vertical scrollbar.
Also, I want to use dynamic word wrap, i.e. resizing the window changes
the word wrap.

Main problem is, how can I determine the amount of space above and below
the current view fast, so I can correctly calculate the size of the
scrollbar?

New lines will be added to the bottom. My main problem is resizing, which
means many changes to the layout.

Any pointers on tutorials for this? Or some example source?

TIA,
John

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Paul Lutus - 29 Aug 2004 04:22 GMT

> Hi,
>
> I am looking for a way to display a lot (500 - 2000) lines of text
> mixed with graphics fast in an applet.

Define "mixed with graphics." Leave nothing to the imagination.

> Not all lines will be visible, so I want a vertical scrollbar.
> Also, I want to use dynamic word wrap, i.e. resizing the window changes
[quoted text clipped - 3 lines]
> the current view fast, so I can correctly calculate the size of the
> scrollbar?

Why don't you use one of the existing classes that does this exact thing, in
all respects, very fast?

> New lines will be added to the bottom. My main problem is resizing, which
> means many changes to the layout.

It doesn't mean you have to do anything about that explicitly, if the applet
is designed properly.

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Paul Lutus
http://www.arachnoid.com

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John Bokma - 29 Aug 2004 20:18 GMT

>> Hi,
>>
>> I am looking for a way to display a lot (500 - 2000) lines of text
>> mixed with graphics fast in an applet.
>
> Define "mixed with graphics." Leave nothing to the imagination.

smileys in the text

>> Not all lines will be visible, so I want a vertical scrollbar.
>> Also, I want to use dynamic word wrap, i.e. resizing the window
[quoted text clipped - 6 lines]
> Why don't you use one of the existing classes that does this exact
> thing, in all respects, very fast?

Because I don't want to use Swing.

>> New lines will be added to the bottom. My main problem is resizing,
>> which means many changes to the layout.
>
> It doesn't mean you have to do anything about that explicitly, if the
> applet is designed properly.

word wrapping must be handled by my own component, can't use Swing.

The speed problem turned out to be me using System.out.println :-$ So
probably what I am doing is going to work fast enough for me.

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John MexIT: http://johnbokma.com/mexit/
personal page: http://johnbokma.com/
Experienced programmer available: http://castleamber.com/
Happy Customers: http://castleamber.com/testimonials.html

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Help: displaying many text lines with graphics fast in applet

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